Looping machine



Patented Jan. 3, 19222L` 3 SHEETS-SHEET 2.

N. YAMAIVIOTO. LOOPING MACHINE.

APPLICATION FILED APILZ, I9I9.

'l 'l' Ill Patented Jan. 3, 19122.

naires srsrasfsarsai nmosuknveiueinomo, or TOKYO, Jaren.

noorrivs j MACHINE.

inca-,eee

T 0 all ipo/1,0m t may concern."

Be it known that l, NINosUirn YAMAMOTO, a subject of the Emperor of Japan, residing at Tokyo,iJapan, lhave invented certain-new and useful improvements in Looping. Machines, ofwhich the following is a specification. Y Y

The present invention relates to .a machine for uniting knit fabrics, and particularly to'V chainV loopers, the object of the invention being to provide a machine of this character which embodies novel features of construction whereby good results are obtained in work of this kind.

vFurther objects ofthe invention are to provide -a machine for uniting knit fabrics inv which the needle carrying arm is peculi iarly mounted so thatit can beV readily swung upwardly into a convenient position for threading the needle, and in which the looper. has 'both an up and down and a lateral swinging movement and'is effectively governed by a cam so that it vmoves in synchronism with the thread needle.

With these and other objects in view as will more fully appear as the description proceeds, the invention consists in certain combi-nations, arrangements andassociations of the parts, `the novel features thereof being pointed out in the appended claims.

For aV full understanding of the invention reference is tofbe had'to the following description and accompanying drawings in which:

Figure 1 is aside elevation of a looping Vmachine whichis constructed in accordance with the invention, portions being broken away and shownl in section to illustrate more clearly the details of construction;

Figure 2 isa top plan view of the looping Vcam memberV which is provided to control the movements of the looper arm; Y

Figure 9 is a side elevation of the needle arm and actuating lever therefor;

Specification of Letters Patent.

Application ledpril'Z, 1919. VSerial 'No-287,096.

Figure 10 is a top plan view of the said members;

' Figure 11 is a vertical sectional view on the line B*B of Figure 9, looking in the direction of the arrows;

Figures 12 and 13 are fixed clutch disk;

Figure 14 is a detail Yview of the drive pulley;

Figure 15 is a sectional View through the same, taken on the line C-C of Figure 14;

Figures 16 and 17 are detail views of the segmental plate which supports the guideeye;

Figure 18 is a detail view pawl; Y

Figure 19 is a detail view of the guide for the feed pawl;

Figures 20 and 21 are detail views of the cam engaging shoe of the looper arm;

Figures 22 and 23 are detail'views of the looper arm;

Figures 24 to 27 are detail views illustrating the various successive steps in the move# mentsof the thread needle and looper; and

Figure 28 is a detail view of the iinishedv work of the machine.

Corresponding and like parts are referred to in the following description and indicated in all of the views of the drawings by like reference characters.

Referring to the drawings, which illustrate one embodiment of the invention, the numeral 1 designates a bed plate which is provided with a pair of standards 2 and 2 within which a drive shaft 3 is journaled.

Integral with the upright 2 is a lateral arm 16, which is provided with va post 50 supporting the usual table 51. A ring 41 is rotatively mounted on the table 51 and the periphery of this ring is provided with the usual impaling pinsr24. The loops of the knit fabric members which are to be united by the operation of the present machine are supportedon the impaling pins in a manner which is well known in this art.

The ring 41 is provided at the bottom thereof with a rack 52 which is engaged by a pinion 40 upon a short shaft (not shown) which is arranged under the table 51, andwhich is also provided with a ratchet wheel 39.V A drive pawl 38. engages the ratchet wheel 39 and is operatively connected to an eccentric member 37 on the shaft' 3. A suitable guide 43, shown in detail views Aof the of the stop detail by Figure 19, is provided for directing the pawl 38 in its movements, and itV will be obvious that as the shaft 3 is rotated the pawl will cause an intermittent ro- Y ably clamped upon the end of the said arm.

An actuating arm 15 is also mounted upon the stub shaft 17, said arm being provided with a spring actuatingplunger 18" (see Figures 9, 10 and 11), which is adapted to engage either one of a pair of openings 19 and 19 in the enlarged pivot end of the needle arm 18. 1n either position the needle arm is locked rigidly with the actuating arm, and when the plunger 18 engages the opening 19, as indicated by Figure 9, the thread needle is in operative position, while when the plunger 18 is in engagement with the opening 19 the thread needle is swung upwardly away from the other parts of the mechanism so that the thread 25 can be readily inserted through the eye 23 thereof. The swinging end of the actuator arm 15 has a block 14 pivotally connected there with, said block being engaged by the groove 13 of an eccentric disk 5 which is rigidly applied to the shaft 3, the construction of the eccentric disk being clearly illustrated by Figures 4 and 5. As the shaft 3 Y rotates the actuator arm 15 is moved up and down, with the result that the thread needle 23 is oscillated back and forth through the guide-eye 22. This guide-'eye 22 is carried by a segmental plate 21 which is supported in position adjacent the periphery of the ring 41 by means of an arm 20 which is shown as secured to the standard 2. 1

The looper 10 which cooperates with the thread needle 23 is carried by the swinging end of a looper arm 7 which is pivotally connected at 8 to the head of an upright pin 6, thereby enabling it to swing back and forth laterally as well as vertically up and down. An L-shaped shoe 9 (see Figures 2O and 21) is adjustably mounted upon the looper arm 7 and engages a cam element 4 which is rigidly applied to the shaft 3 at a point adjacent to the eccentric disk 5. This cam 4 which is shown in detail by Figures v6, 7 and 8, has such a construction that it operates` both to swing'looper arm 7 laterally and up and down so that 1t cooperates in the proper manner with the thread needle 23. The looper 10 is adjustably secured t0 the end of the looper arm by means of a set screw 11 which passes through an opening therein, as indicated more clearly by Figure 24, and the shoe 9 is adjustable upon the looper arm 7 so that proper compensation can be made for wear of the parts. For this purpose the base of the shoe 9 is shown as provided with a dove-tail tongue which is slidable in a corresponding slot formed transversely in the looper arm. A set screw engages the shoe 9 to hold it in an adjustable position, and it can be readily moved back and forthl as may benecessary to compensate for wear.

The thread 25, as indicated more clearly by Figure 1, passes through an eye 26 and thence between two tension disks 27 at the upper end of an upright arm 53 which is secured to the end of the stub shaft 17. After passing between the tension disks 27 the thread is carried through the eyes 28, 29 and 30 and thence threaded through the eye 23 of the thread needle 23. The thread is thus maintained underthe proper tension as it is supplied to the thread needle during the looping operation when the machine is in action.

In the operation of the machine'the main shaft 3 may either be manually driven by means of the crank handle 31, or driven by power through the medium of the pulley 34. The pulley' 34 is loose upon the shaft 3 and is movable longitudinally thereon by means of a shifting lever 33 which is controlled by a handle 32. Vhen it is desired to drive the machine by power the pulley 34 is moved against the fixed clutch disk 35 of the shaft. A lug 34 on the pulley then enters one of the cut-away portions 35 of the disk 35,V

with the result that the pulley is locked with the shaft and can be employed to rotate the same.

Upon the rotation of the shaft 3 the thread needle 23 is reciprocated back and forthv andV the looper 10 moved in synchronism there-V with so that the thread 25 is successively looped through the knit fabrics which it is desired to connect. The relations between the eccentric member 5 and cam 4 are such that the cycle of movement of the `thread needle and looper is as indicated by Figures 24 to 27. The rotation of the shaft 3 first causes the thread needle to advance and traverse the upper side of one of the impaling pins and hence pass through the aligned edge loops carried thereby. The thread loops carried forward by the thread needle are then engaged by the looperin the ordinary way, whereby at the limit of the forward stroke of the thread needle the parts are in the positions illustrated by Figure 24. A further rotation of the shaft 3 causes the thread needle 23 to withdraw and also rotates the ring 41 one step so as to bring the next impalin pin 24 under the thread needle and opposite the guide-eye 22. As the thread needle advances upon its next forward movement the cam 4 cooperates with the shoe 9 to swing the looper arm 7 and advance the looper 10 beyond the path of the thread needle, as indicated by Figure 26, the block 9 of the looper arm being always held in a yielding engagement with the cam 4 by the spring 36. The thread needle thus passes through the loop held by the looper 10, as well as through the edge loops of the articles supported by the' impaling pins. A further rotation oi' the shaft 3 vcauses the cam i to move the loopervlO downwardly below the thread needle and to permit vthe return o the looper to its original position on the opposite side of the thread needle,'as indicated by Figure 27. This completes one cycle of movement, and

a further rotation oi' the shaft 3 will now cause the looper l0 to move laterally and straddle the thread needle 23, as indicated by Figure 24. The edge loops of the articles upon the impaling pinsl are thus connected by a continuous chain stitch, as indicated by Figure 28.

, Having thus described my invention, what claim as new and desire to secure by Letters Patent, is:

l. A looping machine of theJ character described, including impaling pins or engaging the edge loops of the articles to be connected, a looper, a t iread needle, a swinging needle arm adapted either to be swung downwardly into operative position or to be swung upwardly for the purpose of threading the needle, a swinging actuating arm mounted upon the same axis as the needle arm, and a locking connection between the actuating arm and the needle arm whereby the latter can be held in either of its two positions relative to the actuating arm, and means for driving the actuating arm and looper in synchronism.

2. A looping mechanism of the character described, including; impaling pins upon which the edge loops of the articles to be connected are supported, a looper, a thread needle, a swinging needle arm, a swinging actuating arm mounted upon the same axis as the needle arm, the needle arm being adapted to be held in difierent positions relative to the actuating arm and to be either swung downwardly into operative position or swung upwardly into position for threading the needle, one of said members being provided with a series of openings, a detent upon the other member adapted to engage a selected one of the openings to hold the needle arm in an adjusted position, and means for driving the actuating arm and looper in synchronism.

in testimony whereof I aiiix my signature in presence of two witnesses.

NINOSKE YAMAMOTO.

l/Vitnesses L. KAWAHARA, D. Ism. 

